Which stabilizing force in protein tertiary structures is a covalent bonding force?

Question

Quizplus · Accepted Answer

Disulfide bonding involves the covalent bonding between two sulfur atoms in cysteine residues, making it the only covalent bonding force listed in the options. Ionic bonding involves electrostatic interactions between positively and negatively charged amino acids, hydrophobic interactions involve the clustering of nonpolar amino acids in a protein's interior, and van der Waals bonding involves weak attractions between electron clouds of atoms.

Which Stabilizing Force in Protein Tertiary Structures Is a Covalent